In the context of Information Societies, a tremendous amount of information is daily exchanged or released. Among various information-release cases, medical document release has gained significant attention for its potential in improving healthcare service quality and efficacy. However, integrity and origin authentication of released medical documents is the priority in subsequent applications. Moreover, sensitive nature of much of this information also gives rise to a serious privacy threat when medical documents are uncontrollably made available to untrusted third parties. Redactable signatures allow any party to delete pieces of an authenticated document while guaranteeing the origin and integrity authentication of the resulting (released) subdocument. Nevertheless, most of existing redactable signature schemes (RSSs) are vulnerable to dishonest redactors or illegal redaction detection. To address the above issues, we propose two distinct RSSs with flexible release control (RSSs-FRC). We also analyse the performance of our constructions in terms of security, efficiency and functionality. The analysis results show that the performance of our construction has significant advantages over others, from the aspects of security and efficiency.

中文翻译：

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发布带有隐私保护和发布控制的经过认证的医疗文件

在信息社会的背景下，每天都会交换或发布大量信息。在各种信息发布案例中，医疗文件发布因其在提高医疗服务质量和效率方面的潜力而备受关注。但是，发布的医疗文件的完整性和原产地认证是后续申请的优先事项。此外，当医疗文件无法控制地提供给不受信任的第三方时，大部分信息的敏感性也会引起严重的隐私威胁。可编辑签名允许任何一方删除经过身份验证的文档的各个部分，同时保证生成的（已发布的）子文档的来源和完整性身份验证。尽管如此，大多数现有的可编辑签名方案 (RSS) 容易受到不诚实的编辑者或非法编辑检测的影响。为了解决上述问题，我们提出了两种不同的具有灵活发布控制的 RSS（RSSs-FRC）。我们还分析了我们建筑在安全性、效率和功能方面的性能。分析结果表明，从安全性和效率方面来看，我们的构建的性能具有明显的优势。